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ID 11722
Eprint ID
11722
FullText URL
Thumnail K003314.pdf 79.2 KB
Title Alternative
ブタ伸展固定肺を用いた0.5-mm等方向データから得られるMPR画像の検討
Author
Maki, Daisuke
Abstract
The aim of the present study was to define the resolution of multiplanar reconstruction (MPR) of the lung from "theoretical isotropic data." Using inflated and fixed lung specimens of the pig placed in the chest wall phantom, 0.5-mm isotropic data were obtained with 2 different helical pitches: 1:7 (high-quality mode) or 1:13, (high-speed mode), and 2 different tube currents: 250 mAs (high-tube-current mode) or 100 mAs (low-tube-current mode), with or without overlapping reconstruction. MPRs were created from these axial data. The diameter of the smallest visible pulmonary artery and bronchi of these CT images were measured on the corresponding slices of the specimen. The high-speed and low-tube-current mode significantly degraded the image quality due to increased noise. The smallest visible pulmonary artery and bronchus resolved on MPRs from axial-spiral data with 0.5-mm collimation were approximately 100 micrometer and 1,000 micrometer in diameter, respectively. In conclusion, helical pitch and tube current influence the resolution of MPR of the lung.
Keywords
multiplanar reconstruction
computed tomography
lung
Note
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=17471306&dopt=Abstract
Published Date
2007-03-23
Publication Title
Content Type
Thesis or Dissertation
Grant Number
甲第3314号
Granted Date
2007-03-23
Grantor
岡山大学
Official Url
http://escholarship.lib.okayama-u.ac.jp/cgi/viewcontent.cgi?article=2778&context=amo
language
日本語
File Version
none
Refereed
Unknown